ML11286A002

Summary of Telephone Conference Call Held on 10/11/2011 Between the USNRC and STP Nuclear Operating Company, Concerning Request for Additional Information Pertaining to the South Texas Project, License Renewal Application

ML11286A002
Person / Time
Site:	South Texas
Issue date:	10/14/2011
From:	Daily J License Renewal Projects Branch 1
To:	South Texas
Cunanan A
References
Download: ML11286A002 (7)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 October 14, 2011 LICENSEE: STP Nuclear Operating Company FACILITY: South Texas Project, Units 1 and 2

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON OCTOBER 11.

2011. BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND STP NUCLEAR OPERATING COMPANY. CONCERNING REQUEST FOR ADDITIONAL INFORMATION PERTAINING TO THE SOUTH TEXAS PRO..IECT, LICENSE RENEWAL APPLICATION (TAC. NOS. ME4936 AND ME4937)

The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of STP Nuclear Operating Company (STPNOC or the applicant) held a telephone conference call on October 11, 2011. to discuss and clarify the staff's request for additional information (RAI) concerning the South Texas Project, Units 1 and 2 license renewal application. The telephone conference call was useful in clarifying the intent of the staff's RAls. provides a listing of the participants and Enclosure 2 contains the draft RAI, along with a summary of pertinent points of the call.

The applicant had an opportunity to comment on this summary.

John W. Daily, Senior Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket Nos. 50-498 and 50-499

Enclosures:

As stated cc w/encls: Listserv

TELEPHONE CONFERENCE CALL STP NUCLEAR OPERATING COMPANY LICENSE RENEWAL APPLICATION LIST OF PARTICIPANTS OCTOBER 11, 2011 PARTICIPANTS: AFFILIATIONS:

• Arthur Cunanan U.S. Nuclear Reoulatorv Commission (NRC)

OnYee NRC China No NRC Arden Aldridae STP Nuclear Ooeratina Company (STPNOC)

• Ken Taolett STPNOC I GarvWamer Worlev Parsons AI Saunders Worlev Parsons Donald Lvnch Readino Kathleen Fix Readino ENCLOSURE 1

REQUEST FOR ADDITIONAL INFORMATION STP NUCLEAR OPERATING COMPANY LICENSE RENEWAL APPLICATION DISCUSSED ON CONFERENCE CALL OCT08ER 11, 2011 Metal Fatigue (035)

Draft RAI 83.1-1 a (Follow-up) 8ackground:

In its response to Request for Additional Information (RAI) 83.1-1 dated September 15, 2011, STP Nuclear Operating Company (STPNOC or the applicant) stated that corrective actions will include repair of the component, replacement of the component or a more rigorous analysis for the component. The applicant also stated that License Renewal Application (LRA) Appendix 83.1 and Table A4-1 Commitment No. 30 will be revised to clarify the corrective actions to be invoked.

Issue:

The applicant did not revise the Updated Final Safety Analysis Report (UFSAR) Supplement in LRA Section A2.1 reflecting the aforementioned corrective actions. The applicant also did not provide the revised LRA Appendix 83.1 and Table A4-1 Commitment No. 30 indicating the changes. The U.S. Nuclear Regulatory Commission (NRC or the staff) cannot determine the acceptability of the changes without reviewing the proposed revision.

Request:

• Revise LRA Section A2.1 to describe the corrective actions to be invoked if a component approaches a cycle counting action limit and a fatigue usage action limit. Or justify that the UFSAR supplement in LRA Section A2.1 provides sufficient information that the corrective actions include repair of the component, replacement of the component or a more rigorous analYSis for the component.

• Provide the proposed revision of LRA Appendix 83.1 and Table A4-1 Commitment No. 30 consistent with the changes discussed in the response to RAI 83.1-1.

Discussion:

The staff and the applicant discussed this RAt. The staff clarified that more detailed information in the UFSAR supplement was appropriate. The applicant understands the staff's concerns and will submit a response. The staff will issue the RAI.

ENCLOSURE 2

2 Draft RAI 83.1-3a (Follow-up)

Background:

In its response to RAI B3.1-3 dated September 15, 2011, the applicant stated that UFSAR will be updated in accordance with Title 10 of the Code of Federal Regulations (10 CFR) 54.29 to identify those transients used in the leak-before break (LBB) analyses. The applicant also stated that LRA Appendix B3.1 will be revised to reflect the enhancements to Element 1, Scope of Program and Element 7, Corrective Actions.

Issue:

The applicant did not provide the revised UFSAR Supplement in LRA Section A2.1. It is not clear to the staff why the transients used in the LBB analyses should be the only information to be included in the UFSAR Supplement. The staff noted that the corrective actions for LBB analyses, which are different from those of fatigue analyses, and other relevant information regarding the use of cycle-counting activities for LBB analyses should also be included in the UFSAR Supplement. The applicant also did not provide the revised LRA Appendix B3.1 and the staff cannot determine the acceptability of the changes without reviewing the proposed revision. Furthermore, the applicant did not revise Table A4-1 Commitment No. 30 consistent with the changes to the enhancements in LRA Appendix B3.1. It is also not clear to the staff whether the plant's cycle-counting procedure will be updated regarding the use of cycle-counting activities for LBB analyses.

Request:

• Provide the UFSAR Supplement regarding the use of cycle-counting activities to ensure the fatigue crack growth analyses for LBB remain valid and associated corrective actions to be invoked if a component approaches the cycle-counting action limit.

• Confirm that the changes to the plant's cycle-counting procedure are consistent with the response to RAI B3.1-3 regarding the use of cycle-counting activities to ensure the fatigue crack growth analyses for LBB remain valid and associated corrective actions to be invoked if a component approaches the cycle-counting action limit. If not, justify why the changes are not needed.

• Provide the proposed revision of LRA Appendix B3.1. Revise Table A4-1 Commitment No. 30 consistent with the changes to the enhancements discussed in the response to RAI B3.1-3, or justify that the Table A4-1 Commitment No. 30 provides sufficient information regarding the use of cycle-counting activities to ensure the fatigue crack growth analyses for LBB remain valid.

Discussion:

The staff and the applicant discussed this Request for Additional Information. The staff clarified that more detailed information in the UFSAR supplement was appropriate. The applicant understands the staff's concerns and will submit a response. The staff will issue the RAI.

3 Draft RAI 83.1-5a (Follow-up) 8ackground:

In its response to RAI 83.1-5 dated September 15, 2011, the applicant added a new commitment (Commitment No. 34) in LRA Table A4-1 indicating that it will perform a review of design basis ASME Class 1 component fatigue evaluations to determine whether additional components may be more limiting than the components identified in NUREG/CR-6260.

Issue:

The staff noted that the applicant's new commitment will be implemented as part of its Metal Fatigue of Reactor Coolant Pressure 80undary Program. However, the applicant did not include this as an enhancement to its program in LRA Appendix 83.1. The applicant also did not revise the UFSAR Supplement in LRA Section A2.1.

Request:

Revise LRA Appendix 83.1 and the UFSA Supplement in LRA Section A2.1 consistent with the additional commitment discussed in the response to RAI 83.1-5.

Discussion:

The staff and the applicant discussed this RAI. The staff clarified that more detailed information in the UFSAR supplement was appropriate. The applicant understands the staff's concerns and will submit a response. The staff will issue the RAI.

October 14, 2011 LICENSEE: STP Nuclear Operating Company FACILITY: South Texas Project, Units 1 and 2

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON OCTOBER 11, 2011, BE1WEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND STP NUCLEAR OPERATING COMPANY, CONCERNING REQUEST FOR ADDITIONAL INFORMATION PERTAINING TO THE SOUTH TEXAS PROJECT, LICENSE RENEWAL APPLICATION (TAC. NOS. ME4936 AND ME4937)

The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of STP Nuclear Operating Company (STPNOC or the applicant) held a telephone conference call on October 11, 2011, to discuss and clarify the staff's request for additional information (RAI) concerning the South Texas Project, Units 1 and 2 license renewal application. The telephone conference call was useful in clarifying the intent of the staff's RAls. provides a listing of the participants and Enclosure 2 contains the draft RAI, along with a summary of pertinent points of the call.

The applicant had an opportunity to comment on this summary.

IRA Arthur Cunanan fori John W. Daily, Senior Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket Nos. 50-498 and 50-499

Enclosures:

As stated cc w/encls: Listservcc w/encls: Listserv DISTRIBUTION:

See next page ADAMS Accession No.: ML11286A002 *concurrence via e-mail OFFICE LA:DLR* PM:DLR:RPB1 BC:DLR:RPB1 PM:DLR:RPB1 NAME SFigueroa JDaily DMorey JDaily (ACunanan for) (ACunanan for)

DATE 10/12/2011 10/13/2011 10/13/2011 10/14/2011 OFFICIAL RECORD COpy

Letter to STP Nuclear Operating Company from John W. Daily dated October 14, 2011 SUB"IECT:

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON OCTOBER 11, 2011, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND STP NUCLEAR OPERATING COMPANY, CONCERNING REQUEST FOR ADDITIONAL INFORMATION PERTAINING TO THE SOUTH TEXAS PROJECT, LICENSE RENEWAL APPLICATION (TAC. NOS. ME4936 AND ME4937)

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